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445 lines
15 KiB
JavaScript
445 lines
15 KiB
JavaScript
if( typeof html5jp == 'undefined' ) {
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html5jp = new Object();
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}
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if( typeof html5jp.graph == 'undefined' ) {
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html5jp.graph = new Object();
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}
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html5jp.graph.radar = function (id) {
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var elm = document.getElementById(id);
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if(! elm) { return; }
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if(elm.nodeName != "CANVAS") { return; }
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if(elm.parentNode.nodeName != "DIV") { return; };
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this.canvas = elm;
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if ( ! this.canvas ){ return; }
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if ( ! this.canvas.getContext ){ return; }
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this.ctx = this.canvas.getContext('2d');
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this.canvas.style.margin = "0";
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this.canvas.parentNode.style.position = "relative";
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this.canvas.parentNode.style.padding = "0";
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};
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html5jp.graph.radar.prototype.draw = function(items, inparams) {
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if( ! this.ctx ) {return;}
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var params = {
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aCap: [],
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aCapColor: "#000000",
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aCapFontSize: "12px",
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aCapFontFamily: "Arial,sans-serif",
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aMax: null,
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aMin: 0,
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backgroundColor: "#ffffff",
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cBackgroundColor: "#eeeeee",
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cBackgroundGradation: true,
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chartShape: "polygon",
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faceColors: null,
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_faceColors: ["rgb(24,41,206)", "rgb(198,0,148)", "rgb(214,0,0)", "rgb(255,156,0)", "rgb(33,156,0)", "rgb(33,41,107)", "rgb(115,0,90)", "rgb(132,0,0)", "rgb(165,99,0)", "rgb(24,123,0)"],
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faceAlpha: 0.1,
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borderAlpha: 0.5,
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borderWidth: 1,
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axisColor: "#aaaaaa",
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axisWidth: 1,
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aLinePositions: "auto",
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aLineWidth: 1,
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aLineColor: "#cccccc",
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sLabel: true,
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sLabelColor: "#000000",
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sLabelFontSize: "10px",
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sLabelFontFamily: "Arial,sans-serif",
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legend: true,
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legendFontSize: "12px",
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legendFontFamily: "Arial,sans-serif",
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legendColor: "#000000"
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};
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if( inparams && typeof(inparams) == 'object' ) {
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for( var key in inparams ) {
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if( key.match(/^_/) ) { continue; }
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params[key] = inparams[key];
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}
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}
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if( params.faceColors != null && params.faceColors.length > 0 ) {
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for( var i=0; i<params._faceColors.length; i++ ) {
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var c = params.faceColors[i];
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var co = this._csscolor2rgb(c);
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if( co == null ) {
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params.faceColors[i] = params._faceColors[i];
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} else {
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params.faceColors[i] = c;
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}
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}
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} else {
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params.faceColors = params._faceColors;
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}
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this.params = params;
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if( params.backgroundColor ) {
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this.ctx.beginPath();
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this.ctx.fillStyle = params.backgroundColor;
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this.ctx.fillRect(0, 0, this.canvas.width, this.canvas.height);
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}
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if(this.canvas.width / this.canvas.height < 1.5 || this.canvas.height < 200) {
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params.legend == false;
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}
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var canvas_pos = this._getElementAbsPos(this.canvas);
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var cpos = {
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x: this.canvas.width / 2,
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y: this.canvas.height / 2,
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r: Math.min(this.canvas.width, this.canvas.height) * 0.75 / 2
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};
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if(params.legend == true) {
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cpos.r = Math.min(this.canvas.width, this.canvas.height) * 0.7 / 2
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cpos.x = this.canvas.height * 0.1 + cpos.r;
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}
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var item_num = items.length;
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if(item_num > 10) { item_num = 10; }
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params.itemNum = item_num;
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var angle_num = 0;
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for(var i=0; i<items.length; i++) {
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var n = items[i].length;
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if(angle_num <= n - 1) {
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angle_num = n - 1;
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}
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}
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if(angle_num < 3) {
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angle_num = 3;
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} else if(angle_num > 24) {
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angle_num = 24;
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}
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params.angleNum = angle_num;
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var axis_angles = [Math.PI/2];
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for(var i=1; i<angle_num; i++) {
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axis_angles.push( Math.PI / 2 - Math.PI * 2 * i / angle_num );
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}
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this._draw_chart_shape(params, cpos, axis_angles);
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var max_v = null;
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var min_v = null;
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var max_n = 0;
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for(var i=0; i<item_num; i++) {
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var n = items[i].length;
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for(var j=1; j<n; j++) {
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var v = items[i][j];
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if( isNaN(v) ) {
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throw new Error('Item data is invalid. : ' + n);
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}
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if(max_v == null) {
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max_v = v;
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} else if(v >= max_v) {
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max_v = v;
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}
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if(min_v == null) {
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min_v = v;
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} else if(v <= min_v) {
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min_v = v;
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}
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}
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if(n - 1 >= max_n) {
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max_n = n - 1;
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}
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}
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if( typeof(params.aMin) != "number" ) {
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params.aMin = 0;
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}
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if( typeof(params.aMax) != "number" ) {
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params.aMax = max_v;
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}
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if( typeof(params.aLinePositions) == "string" && params.aLinePositions == "auto" ) {
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params.aLinePositions = this._aline_positions_auto_calc(params.aMin, params.aMax);
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}
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this._draw_aline(params, cpos, axis_angles);
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this._draw_axis(params, cpos, axis_angles);
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this._draw_scale_label(params, cpos);
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for(var i=0; i<items.length; i++) {
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this._draw_radar_chart(params, cpos, axis_angles, items[i], params.faceColors[i]);
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}
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this._draw_caption(params, cpos, axis_angles);
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this._draw_legend(items, params, cpos);
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};
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html5jp.graph.radar.prototype._aline_positions_auto_calc = function(min, max) {
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var range = max - min;
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var power10 = Math.floor( Math.log(range) / Math.log(10) );
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var unit = Math.pow( 10, power10);
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if( (Math.log(range) / Math.log(10)) % 1 == 0 ) {
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unit = unit / 10;
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}
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var keta_age = 1;
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if(unit < 1) {
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keta_age += Math.abs(power10);
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}
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var p = Math.pow(10, keta_age);
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range = range * p;
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unit = unit * p;
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min = min * p;
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max = max * p;
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var array = [min];
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var unum = range / unit;
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if( unum > 5 ) {
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unit = unit * 2;
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} else if( unum <= 2 ) {
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unit = unit * 3 / 10
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}
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var i = 1;
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while(min+unit*i<=max) {
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array.push(min+unit*i);
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i++;
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}
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for(var i=0; i<array.length; i++) {
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array[i] = array[i] / p;
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}
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return array;
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};
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html5jp.graph.radar.prototype._draw_legend = function(items, params, cpos) {
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if(params.legend != true) { return; }
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var s = this._getTextBoxSize('あTEST', params.legendFontSize, params.legendFontFamily);
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var lpos = {
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x: Math.round( cpos.x + cpos.r + this.canvas.width * 0.15 ),
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y: Math.round( ( this.canvas.height - ( s.h * params.itemNum + s.h * 0.2 * (params.itemNum - 1) ) ) / 2 ),
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h: s.h
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};
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lpos.cx = lpos.x + Math.round( lpos.h * 1.5 );
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lpos.cw = this.canvas.width - lpos.cx;
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for(var i=0; i<params.itemNum; i++) {
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this._drawText(lpos.cx, lpos.y, items[i][0], params.legendFontSize, params.legendFontFamily, params.legendColor);
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this._make_path_legend_mark(lpos.x, lpos.y, s.h, s.h);
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this.ctx.fillStyle = params.cBackgroundColor;
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this.ctx.fill();
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this._make_path_legend_mark(lpos.x, lpos.y, s.h, s.h);
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this.ctx.fillStyle = params.faceColors[i];
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this.ctx.globalAlpha = params.faceAlpha;
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this.ctx.fill();
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this._make_path_legend_mark(lpos.x, lpos.y, s.h, s.h);
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this.ctx.strokeStyle = params.faceColors[i];
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this.ctx.globalAlpha = params.borderAlpha;
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this.ctx.stroke();
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lpos.y = lpos.y + lpos.h * 1.2;
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}
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};
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html5jp.graph.radar.prototype._make_path_legend_mark = function(x,y,w,h) {
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this.ctx.beginPath();
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this.ctx.moveTo(x, y);
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this.ctx.lineTo(x+w, y);
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this.ctx.lineTo(x+w, y+h);
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this.ctx.lineTo(x, y+h);
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this.ctx.closePath();
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};
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html5jp.graph.radar.prototype._draw_caption = function(params, cpos, axis_angles) {
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if( typeof(params.aCap) != "object" || params.aCap.length < 1 ) { return; }
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var n = params.aCap.length;
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if(n > params.angleNum) { n = params.angleNum; }
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for(var i=0; i<n; i++) {
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var text = params.aCap[i];
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var s = this._getTextBoxSize(text, params.aCapFontSize, params.aCapFontFamily);
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var ang = axis_angles[i];
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var x = cpos.x + cpos.r * 1.15 * Math.cos(ang) - s.w / 2;
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var y = cpos.y - cpos.r * 1.15 * Math.sin(ang) - s.h / 2;
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if( x < this.canvas.width * 0.02 ) { x = this.canvas.width * 0.02; }
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if( x + s.w > this.canvas.width * 0.98 ) { x = this.canvas.width * 0.98 - s.w; }
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if( y < this.canvas.height * 0.02 ) { y = this.canvas.height * 0.02; }
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if( y + s.h > this.canvas.height * 0.98 ) { y = this.canvas.height * 0.98 - s.h; }
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x = Math.round(x);
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y = Math.round(y);
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this._drawText(x, y, text, params.aCapFontSize, params.aCapFontFamily, params.aCapColor);
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}
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};
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html5jp.graph.radar.prototype._draw_scale_label = function(params, cpos) {
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if( params.sLabel != true) { return; }
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if( typeof(params.aLinePositions) != "object" || params.aLinePositions.length < 1 ) { return; }
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for(var i=0; i<params.aLinePositions.length; i++) {
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if( typeof(params.aLinePositions[i]) != "number" ) { continue; }
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if( params.aLinePositions[i] < params.aMin ) { continue; }
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var text = params.aLinePositions[i].toString();
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var s = this._getTextBoxSize(text, params.sLabelFontSize, params.sLabelFontFamily);
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var x = Math.round( cpos.x - s.w - 3 );
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var y = Math.round( cpos.y - ( ( params.aLinePositions[i] - params.aMin ) * cpos.r / ( params.aMax - params.aMin ) ) - ( s.h / 2 ) );
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this._drawText(x, y, text, params.sLabelFontSize, params.sLabelFontFamily, params.sLabelColor);
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}
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};
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html5jp.graph.radar.prototype._draw_radar_chart = function(params, cpos, axis_angles, values, color) {
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this._make_path_for_radar_chart(params, cpos, axis_angles, values);
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this.ctx.globalAlpha = params.faceAlpha;
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this.ctx.fillStyle = color;
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this.ctx.fill();
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this._make_path_for_radar_chart(params, cpos, axis_angles, values);
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this.ctx.globalAlpha = params.borderAlpha;
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this.ctx.lineWidth = params.borderWidth;
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this.ctx.strokeStyle = color;
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this.ctx.stroke();
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this.ctx.globalAlpha = 1;
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};
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html5jp.graph.radar.prototype._make_path_for_radar_chart = function(params, cpos, axis_angles, values) {
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var r0 = 0;
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if( typeof(values[1]) == "number" ) {
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r0 = cpos.r * (values[1] - params.aMin ) / (params.aMax - params.aMin);
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if( r0 < 0 ) { r0 = 0; }
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}
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this.ctx.beginPath();
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this.ctx.moveTo( Math.round( cpos.x + r0 * Math.cos(axis_angles[0]) ), Math.round( cpos.y - r0 * Math.sin(axis_angles[0]) ) );
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for(var i=1; i<axis_angles.length; i++) {
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var r = 0;
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if( typeof(values[i+1]) == "number" ) {
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r = cpos.r * ( values[i+1] - params.aMin ) / (params.aMax - params.aMin);
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if( r < 0 ) { r = 0; }
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}
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this.ctx.lineTo( Math.round( cpos.x + r * Math.cos(axis_angles[i]) ), Math.round( cpos.y - r * Math.sin(axis_angles[i]) ) );
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}
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this.ctx.closePath();
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};
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html5jp.graph.radar.prototype._draw_axis = function(params, cpos, axis_angles) {
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if( typeof(params.axisWidth) != "number" || params.axisWidth <= 0 ) {
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return;
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}
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for(var i=0; i<axis_angles.length; i++) {
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this.ctx.beginPath();
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this.ctx.lineWidth = params.axisWidth;
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this.ctx.strokeStyle = params.axisColor;
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this.ctx.moveTo(cpos.x, cpos.y);
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this.ctx.lineTo( Math.round( cpos.x + cpos.r * Math.cos(axis_angles[i]) ), Math.round( cpos.y - cpos.r * Math.sin(axis_angles[i]) ) );
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this.ctx.stroke();
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}
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};
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html5jp.graph.radar.prototype._draw_aline = function(params, cpos, axis_angles) {
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if( typeof(params.aLineWidth) != "number" || params.aLineWidth <= 0 ) {
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return;
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}
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if( typeof(params.aLinePositions) != "object" || params.aLinePositions.length < 1 ) {
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return;
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}
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for(var i=0; i<params.aLinePositions.length; i++) {
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if(params.aLinePositions[i] < params.aMin) { continue; }
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var r = cpos.r * ( params.aLinePositions[i] - params.aMin ) / (params.aMax - params.aMin);
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if( r <= 0 ) { continue; }
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this.ctx.beginPath();
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this.ctx.lineWidth = params.aLineWidth;
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this.ctx.strokeStyle = params.aLineColor;
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if(params.chartShape == "polygon") {
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this.ctx.moveTo( Math.round( cpos.x + r * Math.cos(axis_angles[0]) ), Math.round( cpos.y - r * Math.sin(axis_angles[0]) ) );
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for(var j=1; j<axis_angles.length; j++) {
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this.ctx.lineTo( Math.round( cpos.x + r * Math.cos(axis_angles[j]) ), Math.round( cpos.y - r * Math.sin(axis_angles[j]) ) );
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}
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this.ctx.closePath();
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} else if(params.chartShape == "circle") {
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this.ctx.arc(cpos.x, cpos.y, r, 0, Math.PI*2, false);
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} else {
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throw new Error('Option parameter [chartChape] is invalid. : ' + params.chartShape);
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}
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this.ctx.stroke();
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}
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};
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html5jp.graph.radar.prototype._draw_chart_shape = function(params, cpos, axis_angles) {
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this._make_path_chart_shape(params, cpos, axis_angles);
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this.ctx.fillStyle = params.cBackgroundColor;
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this.ctx.fill();
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if( params.cBackgroundGradation == true && ! document.uniqueID ) {
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this._make_path_chart_shape(params, cpos, axis_angles);
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var radgrad = this.ctx.createRadialGradient(cpos.x,cpos.y,0,cpos.x,cpos.y,cpos.r);
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radgrad.addColorStop(0, "rgba(0,0,0,0)");
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radgrad.addColorStop(0.8, "rgba(0,0,0,0.01)");
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radgrad.addColorStop(1, "rgba(0,0,0,0.1)");
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this.ctx.fillStyle = radgrad;
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this.ctx.fill();
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}
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};
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html5jp.graph.radar.prototype._make_path_chart_shape = function(params, cpos, axis_angles) {
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this.ctx.beginPath();
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if(params.chartShape == "circle") {
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this.ctx.arc(cpos.x, cpos.y, cpos.r, 0, Math.PI*2, false);
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} else if(params.chartShape == "polygon") {
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this.ctx.moveTo(cpos.x, cpos.y-cpos.r);
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for(var i=0; i<axis_angles.length; i++) {
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var edge_x = Math.round( cpos.x + cpos.r * Math.cos(axis_angles[i]) );
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var edge_y = Math.round( cpos.y - cpos.r * Math.sin(axis_angles[i]) );
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this.ctx.lineTo(edge_x, edge_y);
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}
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this.ctx.closePath();
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} else {
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throw new Error('Option parameter [chartChape] is invalid. : ' + params.chartShape);
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}
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};
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html5jp.graph.radar.prototype._drawText = function(x, y, text, font_size, font_family, color) {
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var div = document.createElement('DIV');
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div.appendChild( document.createTextNode(text) );
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div.style.fontSize = font_size;
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div.style.fontFamily = font_family;
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div.style.color = color;
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div.style.margin = "0";
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div.style.padding = "0";
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div.style.position = "absolute";
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div.style.left = x.toString() + "px";
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div.style.top = y.toString() + "px";
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this.canvas.parentNode.appendChild(div);
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}
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html5jp.graph.radar.prototype._getTextBoxSize = function(text, font_size, font_family) {
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var tmpdiv = document.createElement('DIV');
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tmpdiv.appendChild( document.createTextNode(text) );
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tmpdiv.style.fontSize = font_size;
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tmpdiv.style.fontFamily = font_family;
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tmpdiv.style.margin = "0";
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tmpdiv.style.padding = "0";
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tmpdiv.style.visible = "hidden";
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tmpdiv.style.position = "absolute";
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tmpdiv.style.left = "0px";
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tmpdiv.style.top = "0px";
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this.canvas.parentNode.appendChild(tmpdiv);
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var o = {
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w: tmpdiv.offsetWidth,
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h: tmpdiv.offsetHeight
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};
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tmpdiv.parentNode.removeChild(tmpdiv);
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return o;
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}
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html5jp.graph.radar.prototype._getElementAbsPos = function(elm) {
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var obj = new Object();
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obj.x = elm.offsetLeft;
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obj.y = elm.offsetTop;
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while(elm.offsetParent) {
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elm = elm.offsetParent;
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obj.x += elm.offsetLeft;
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obj.y += elm.offsetTop;
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}
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return obj;
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};
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html5jp.graph.radar.prototype._csscolor2rgb = function (c) {
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if( ! c ) { return null; }
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var color_map = {
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black: "#000000",
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gray: "#808080",
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silver: "#c0c0c0",
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white: "#ffffff",
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maroon: "#800000",
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red: "#ff0000",
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purple: "#800080",
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fuchsia: "#ff00ff",
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green: "#008000",
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lime: "#00FF00",
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olive: "#808000",
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yellow: "#FFFF00",
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navy: "#000080",
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blue: "#0000FF",
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teal: "#008080",
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aqua: "#00FFFF"
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};
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c = c.toLowerCase();
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var o = new Object();
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if( c.match(/^[a-zA-Z]+$/) && color_map[c] ) {
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c = color_map[c];
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}
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var m = null;
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if( m = c.match(/^\#([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i) ) {
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o.r = parseInt(m[1], 16);
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o.g = parseInt(m[2], 16);
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o.b = parseInt(m[3], 16);
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} else if( m = c.match(/^\#([a-f\d]{1})([a-f\d]{1})([a-f\d]{1})$/i) ) {
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o.r = parseInt(m[1]+"0", 16);
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o.g = parseInt(m[2]+"0", 16);
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o.b = parseInt(m[3]+"0", 16);
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} else if( m = c.match(/^rgba*\(\s*(\d+),\s*(\d+),\s*(\d+)/i) ) {
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o.r = m[1];
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o.g = m[2];
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o.b = m[3];
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} else if( m = c.match(/^rgba*\(\s*(\d+)\%,\s*(\d+)\%,\s*(\d+)\%/i) ) {
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o.r = Math.round(m[1] * 255 / 100);
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o.g = Math.round(m[2] * 255 / 100);
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o.b = Math.round(m[3] * 255 / 100);
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} else {
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return null;
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}
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return o;
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};
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